It is not the same player, the ban that you see has the name of that player, but the ID of the banned player it's identical with another player who has another name besides...
maybe it's the same but in the same way I can not do anything if the player is playing without a hack

The demo is clean, not because it is not suspicious, it is, but of the 3 rounds that you recorded only in 1 shows a small moment that was when he killed the player "nnnn" but only with that little moment, I can not judge him as dirty.

I personally go to the base tt, and I go by that part I just look at the sides if I hear any noise or if I see enemies higher, but if I do not see anyone, I advance and forget to look at the corners Almost always, there is no one.